19 2 points The standard error (SE) increases as sample size increases. True False 20 2 points Three new medicines (FluGone, SneezAb, and Fevir) were studied for treating the flu. 21 flu patients were randomly assigned into one of the three groups and received the assigned medication. Their recovery times from the flu were recorded. What is the treatment factor in this study? Type of drug Gender of patient Age of the patients All of the above